Wheel mounting for band saws



5, 1952 E. c. KARP WHEEL MOUNTING FOR BAND SAWS INVENTOR.

2 SHEETSSHEET 1 m m. a W m Filed Feb. 15. 1949 E. C. KARP WHEEL MOUNTING FOR BAND SAWS Aug. 5, 1952 2 SHEETS-SHEET 2 Filed Feb. 15, 1949 5 ill/ illa;

INVENTOR. ZZZZZ/ard amp,

Patented Aug. 5, 195 2 OFFICE. 4

2,606,049 WHEEL" MOUNTING FOR BAND saws V Edwaggq liarp, Belvidere, lllpassigncnto Saul tary, Scale Company, Belvidere, Ill.,- acorporationlof l llinois "i Application- February 15, 1949; Serial No. 76;474

quire thorough cleaning after use: and, conse-v quently, partswhich come directly in contact with the food, as well as those to which particles of food may be transferred by, the moving parts, must be readily dismountable for cleaning.

saws of this character operate at, high speed and, consequently, the wheels carrying the saw band rotate rapidly in operation. Therefore, theseswheels require exact alignment which must be maintained in use.

.It .isan object of the, presentinvention to providega new. andimproved wheel mounting for bandisaws. V

It is. a further Qbjectto provide such: a. wheel which is readily dismountable. for, cleaning.

It is another object to provide a wheel mountingsuch that when the wheel is removed'the.

wheel-bearingsare left as-an' integral part of the saw while the wheel itself is detachable as a separate unit for washing and even immersion with no possibility of damage to the bearings as is the case in most conventional designs.

It is also an object to provide a wheel and mounting wherein a minimum of coacting surfaces need be manufactured to critical tolerances.

It is an additional object to provide a wheel and mounting which is simple in design and manufacture and adapted for commercial production and use.

Other and further objects will appear as the description proceeds.

I have shown a preferred embodiment of the invention in the accompanying drawings, in which- Figure l is a vertical View partly in section of a band saw with the improved mounting applied thereto;

Figure 2 is an enlarged cross section of the lower or drive wheel mounting; and

Figure 3 is a fragmentary view taken on line 3-3 of Figure 2.

" fclaim. (01. 257-53) The; band saw construction to which thepres entinventionis applied is shown generally in Figure 1. This construction includes the base H and worktable 2. The generally U-shaped bandsaw and pulley; housing l4 has-a lowerhorizontal, arm I51 and an upper horizontal arm 16, these arms being shown in vertical section in the drawing. This housing; and, mounting assembly is: supported: from: the base-ii. lower wheel i8, is supported: on shaft lilacarrying a pulley, 2B; This; pulley: 20::isshown; as; driven byybelt; Htpassingr around; pulley 2.4- which is secured tothe shaft ofthe-dri e motora25e The; shaft-J9 is supported inbracketlgl, which issecuredby-bolts 28 to; the lower saw; andpulley: housingjportion; l5:

The: upwardly-moving run 2.9 of the :band sawpasses; up through, the; main vertical portion I 4 1 of: theiband :sawpulleyp housing; and around the upper; wheel 33!. This-wheel $11" is carried on ashaftwhich' is supportediin;theradjustable block 3.3;:v This. block-1 is, movable; vertically on guide;v

membersau and may: be; adjusted upwardly. or

downwardly; to? properly"- tension the; bladebymeans; ofjrotationof: thezhand, wheel.-v 35.- The, guidessils may have .their lower ends moved in-.

Thej worktablew l 2-;is:sho wn as suppliedwith a slice thickness; guide; 40,- which is; pivotally sup;- ported :by; arm 41 :from the; fixed'shaft 4-21. The;

general construction of the bandpaw assemblyy shown forms no part of the present invention, having been covered in my copending application previously identified herein.

The details of construction of the wheel mounting are shown in Figures 2 and 3. The shaft I9 is shown as rotating in ball bearings 44 and 45 supported in the bracket 21. The bearing 45 is located relative to the bracket 21 by the split ring 41 and is held in place by the bearing retainer ring 49, which is secured to the bracket 21 by screws 56. The shaft I9 is located relative to the bearing 44 by split rings 52. The bearing 45 is located relative to shaft H! by the split rings 53.

The drive disc is fixedly secured upon the shaft l9 by any suitable means, as, for example, by a brazing operation. This drive disc 55, as shown in Figure 3, is provided with a notch 56 adapted to receive the drive pin 58 which is secured to the wheel l8. The drive disc 55 has a radially extending flat face 60 which is engaged by a similar radially extending inner fiat face The B2 on the wheel 18. The wheel (8 is provided with a central axial opening 64 of a size to iit loosely over the outer end 65 of shaft i9. inner portion of this opening 64 is enlarged to The provide the circumferential shoulder 61. The outer portion of this opening 64 is outwardly iiared, as shown at 69, to form a substantially conical seat.

I The wheel-holding member H is threaded onthe outer end 65 of the shaft and has a reduced inwardly extending portion I3 which extends through the central opening 64 in the wheel beyond the shoulder 61. This inner por appended claim.

tion of member 7! carries the split ring 75 which is of such size as to engage the shoulder 61 when the member II is screwed ofi the end 65 of the shaft l9.

seat 69 of the wheel is. The member H isprovided, at its outer portion, with a diametrical opening 80 adapted to receive the removable rodlike member 82 which may be inserted in order to apply additional force to'the member H when seating or unseating the wheel 18 relative to the face of the drive disc 55. The inter-relationship of the fiaringseat B9 and the convex surface 78 is such that the wheel I8 may be properly and firmly seated against the face 62 of the drive disc 65 without the necessity of the parts being manufactured to such close tolerances as is required with other types of construction.

The heavy split ring serves to draw the wheel- I8 away from the drive disc l9 as the member H is screwed outwardly and this ring 15 engages the shoulder 61. The wheel may thus be positively removed, even though it has become stuck to the drive disc by foreign matter, such as food particles which may have reached the hub of the wheel in the use of the meat saw. The split ring 15 also makes parts l8, "H and 58 an integral unit assembly upon removal, keeping the number of parts to be handled to one, rather than two. The unscrewing of the member Il may be assisted by inserting the member 82 and tapping portions of that member in a direction tangential of the rotation of the member H to start that member, after which it may be readily removed manually by applying a rotating force to the member 82.

The construction shown, therefore, provides a simple and efficient method of manually mount ing the wheels of the band saw by devices through the operation of which the wheel may be positively applied and positively removed for cleaning or for other purposes.

This member H is provided with a convex surface '18 adapted to engage the flaring I claim:

A wheel mounting for band saws or the like comprising a shaft, a drive disc secured to the shaft, a wheel having an axial opening therein fitting loosely about the shaft, the wheel having a circumferential shoulder about said opening adapted to face toward said disc, the wheel opening having an outwardly flared conical portion at its end opposite the disc, a wheel-holding member threaded on the end of the shaft, said member having aconvex portion adapted to engage the flaring portion of the wheel opening to force the wheel against the drive disc, a portion of the member extending inwardly beyond the wheel shoulder and carrying means to engage said shoulder, said means being detachably secured to the holding member, and a detachable driving connection between the wheel and disc, the outer portion of the holding member extending beyond the shaft end and having a diametrical opening therethrough to receive a removable member for use in rotation of the member in attaching or removing the wheel.

EDWARD C. KARP.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 173,126 Little Feb. 8, 1876 496,442 Percy et al. May 2, 1893 610,152 Binns Aug. 30, 1898 1,932,522 Irgens Oct. 31, 1933 2,442,697 Krohm June 1, 1948 FOREIGN PATENTS Number Country Date 564,228 Great Britain of 1944 

